Home
Class 11
PHYSICS
[" The dispersive powers of two material...

[" The dispersive powers of two materials are "0.3080.28" .They are used to construct two lenses which "],[" are kept in contact to eliminate chrocaltengt flor av.cons the for the foccal length of a "],[" comination is samfor red and violett the focal length) f(for av.color) of the lens made fithe material "],[" oftispersive power "0.30" is "10" cm,then the focal length ffor av.color,of the lens of the mater material is: "],[[" (A) "28/3cm," (B) "-0.28/3m," (C) "0.7577m," (D) none of these "]]

Promotional Banner

Similar Questions

Explore conceptually related problems

The dispersive powers of two materials are 0.30 & 0.28 . They are used to construct two lenses which are kept in contact to eliminate chromatic aberration (that means the f_(v)=f_(r) the focal ) If the material of disperive power 0.30 is 10cm, then the focal lenght (for av, color) of the lens of other material is :

The dispersive powers of two materials are 0.30 & 0.28 . They are used to construct two lenses which are kept in contact to eliminate chromatic aberration (that means the f_(v)=f_(r) the focal ) If the material of disperive power 0.30 is 10cm, then the focal lenght (for av, color) of the lens of other material is :

The dispersive powers of two materials are 0.30 & 0.28 . They are used to construct two lenses which are kept in contact to eliminate chromatic aberration (that means the f_(v)=f_(r) the focal ) If the material of disperive power 0.30 is 10cm, then the focal lenght (for av, color) of the lens of other material is :

Two convex lenses with power 2 dioptre are kept in contact with each other. The focal length of the combined lens system is

A converging lens of focal length 40 cm is kept in contact with a diverging lens of focal length 30 cm. Find the focal length of the combination.

The dispersive powers of the materials of the two lenses are in the ratio 4:3 .If the combination of these two lenses is of focal length 60 cm,then the focal lengths of the component lenses are:

The focal length of the combination of two thin lenses in contact is 80 cm. If the focal length of one lens is -20 cm, what is the power of the other lens ?

Two lenses of focal lengths 0.20 m and 0.30 m are kept in contact with each other. Calculate the resultant focal length of the combination. Also calculate the powers of the individual lenses and that of the equivalent lens.